The Thermotech Men's Extreme Base Layer Bottoms offer the heavyweight warmth, comfort and stretching you need to enjoy winter. These tights are made from an Extreme polyester fabric that features ACCLIMATE® Dry+ moisture management yarns to keep you dry, while the smooth outside makes it easy to layer. To give you extra warmth, these tights have a lightly brushed fleece fabric inside, providing extra coziness for those cold days, while their odor blocking technology enhances freshness and odor control guaranteed for 20-30 washes. Thanks to their four-way stretch construction, these bottoms provide no extra bulk as they hug your body and move with you, improving your performance. Stay warm and active all winter with the Thermotech Men's Extreme Base Layer Bottoms!